Same here. VW Heritage parts has a decent selection for the cars I work on. And for T3 (Vanagon here in the US), there are a bunch of domestic parts suppliers, same for air cooled Porsches and VWs (Beetles, Buses, Things, Dune Buggies).
I’m also rebuilding a 64 Chevy truck for a client, and almost every body panel is available from Taiwan, though so far Auto Metal Direct (AMD) has had the best out of the box fit. Some cheaper panels look like they were designed by a blind man wearing baseball mitts.
Depends on how cheap the drywall is.
You may avoid brain damage, but your get cancer form the dust on the way through.